Dust Detection Device Worn on the Human Body

ABSTRACT

A dust detection device, in particular a dust extraction device, for cleaning the air, in particular from wood dust, is configured to be worn around the waist of a user of the dust detection device.

The invention relates to a dust detection device worn on the human body.

PRIOR ART Disclosure of the Invention

An advantage of the invention is a dust detection device which is wornaround the hips and is placed on the hips of a user or worn around thehips of a user. The full freedom of movement in the upper region of theusers torso is advantageously ensured here.

The dust detection device always keeps up with the movement of the user.This has the advantage of a particularly flexible dust detection device.

By means of the features cited in the dependent claims, advantageousdevelopments of the dust detection device according to the main claimare possible.

In an advantageous manner, at least one hose connection element can bearranged on the dust detection device at a left end or at a right end ofthe dust detection device, wherein at least one suction hose isfastenable to the hose connection element of the dust detection device,and the suction hose is couplable to a portable power tool.

This has the advantage that a user can be both right-handed andleft-handed and can work ergonomically with the portable power tool andthe dust detection device fastened thereto.

In an advantageous manner, at least one dust-collecting device, inparticular a dust bag, is arranged on the hose connection element of thedust detection device. However, the dust-collecting device may also beconfigured as a dust box. This has the advantage that the function ofdust collection and a filtering function are realized together.

Dust extraction and air cleaned therewith can therefore be realized in astructurally simple and cost-effective manner.

The dust detection device comprises at least one of the followingcomponents, wherein the list does not have to be complete:

-   -   a hose connection element    -   a valve element    -   a dust bag    -   a motor    -   a turbine    -   an electronics unit    -   a power supply    -   a battery interface

The dust detection device advantageously at least partially surrounds aspace which is completely filled by a user while wearing the dustdetection device. High wearing comfort can thus be advantageouslyachieved.

In the embodiment according to the invention of the dust detectiondevice, a transversal axis and a ventral axis divide the spacetheoretically into a ventral left quadrant I, a dorsal left quadrant II,a dorsal right quadrant III and a ventral right quadrant IV.Particularly advantageously, a center of gravity is located on thetransversal axis during wearing of the dust detection device and extendsin each case by the same amount into the ventral left quadrant I and theventral right quadrant IV. This increases the ergonomics and the wearingcomfort of the dust detection device.

Further advantages and expedient embodiments can be gathered from thedescription of the figures and the drawings.

DRAWINGS

In the drawings:

FIG. 1: is a schematic illustration of a user with a dust detectiondevice according to the invention and a portable power tool,

FIG. 2: is a schematic illustration of a dust detection device accordingto the invention and a user,

FIG. 3: is a schematic illustration of an embodiment of the dustdetection device according to the invention,

FIG. 4: is a schematic illustration of a second embodiment of the dustdetection device according to the invention,

FIG. 5: is a schematic illustration of a third embodiment of the dustdetection device according to the invention,

FIG. 6: is a schematic illustration of a dust detection device accordingto the invention with pivot points,

FIG. 7: is a schematic illustration of a dust detection device accordingto the invention with an HMI and a communication module,

FIG. 8: is a schematic illustration of a dust detection device accordingto the invention with a belt closure.

DESCRIPTION

The same reference signs are used for the same components appearing inthe different exemplary embodiments.

FIG. 1 shows a dust detection device 10 which can be placed around thehips of a user 12. The dust detection device 10 is supported duringwearing on the hip region of the user 12, and therefore particularlyfatigue-free working is permitted since this body region is particularlysuitable for absorbing forces and loads. The dust detection device 10 issuitable for cleaning ambient air, in particular the sucked-up air. Thedust detection device 10 is particularly suitable for cleaning the airof wood dust.

A suction hose 14 is arranged on the dust detection device 10. Thesuction hose 14 is couplable to a portable power tool 18. The portablepower tool 18 can be an eccentric sander, an orbital sander, a deltasander, a belt sander, a jigsaw, a circular saw, a router, a hammerdrill or an angle grinder. However, it is also conceivable for the dustdetection device 10 to serve as a replacement of an upright vacuumcleaner and/or cylinder vacuum cleaner.

The dust detection device 10 always keeps up with the movement of theuser 12. This has the advantage of a particularly flexible dustdetection device 10.

In order to fasten the suction hose 14 to the dust detection device 10,a hose connection element 20 is attached to a left end 19 of the dustdetection device 10. The suction hose 14 is fastenable to the hoseconnection element 20 of the dust detection device 10. The hoseconnection element 20 is composed of a hard material and is attached,preferably rotatably, to the dust detection device 10. The hardness ofthe material is here of the type such that the diameter of the connectedsuction tube remains unchanged whether dust is or is not being suckedup.

The dust detection device 10 extends here in the transversal plane T ofthe human body, as is apparent in FIG. 2. The dust detection device 10here comprises a left end 19 and a right end 21. The hose connectionelement 20 is attachable to the left end 19 of the dust detection device10. By rotation of the dust detection device 10 in the direction of thearrow, the left end 19 of the dust detection device 10 can become theright end 21 of the dust detection device. In this case, the hoseconnection element 20 is attached to the right end 21. The suction hose14 can therefore also be attached either to the left end 19 of the dustdetection device 10 or to the right end 21 of the dust detection device10. This has the advantage that a user may be either right-handed orleft-handed and can work ergonomically with the portable power tool 18and the dust detection device 10 fastened thereto.

FIG. 3 shows a dust detection device 10. The dust detection device inthe exemplary embodiment in FIG. 3 comprises at least the followingcomponents, wherein the list is not complete:

-   -   a hose connection element 20    -   a valve element 22    -   a dust-collecting device 24    -   a motor 26    -   a turbine 28    -   an electronics unit 30    -   a power supply 32    -   a battery interface 34.

The valve element 22 is located in the hose connection element 20. Thevalve element 22 opens as soon as a volumetric flow of air that is to becleaned flows through the dust detection device 10. As soon as thevolumetric flow is stopped, the valve element 22 closes. It cantherefore be prevented that dust inadvertently flows back. However, thevalve element 22 opens only when a suction hose 14 is arranged on thedust detection device 10. During the installation of the suction hose14, movement of the valve element 22 is enabled via a rotary joint. Ifthe suction hose 14 is not arranged on the dust detection device 10, thevalve element 22 does not open.

A dust-collecting device which is configured as a dust bag 24 and whichseparates the sucked-in dust from the air and retains the dust particlesis arranged on the hose connection element 20. The dust-collectingdevice 24 can be attached to the hose connection element 20 via a tongueand groove guide, clip-type latching, a rotary closure or the like. Itis also conceivable for the valve element 22 to be located directly onthe dust-collecting device 24. This has the advantage that thedust-collecting device 24 is automatically closed if it is not arrangedon the dust detection device 10.

The dust-collecting device 24 together with the hose connection element20 is separated from the dust detection device 10. The dust-collectingdevice 24 together with the hose connection element 20 is separated fromthe dust detection device 10 by actuation of an actuating element. Theactuating element can be a latching button or a closure. The actuatingelement can also be used to lock the dust-collecting device 24 togetherwith the hose connection element 20 to the dust detection device 10after the installation.

In order to facilitate installation of the dust-collecting device 24,the dust-collecting device 24 can be provided with a structure, forexample a supporting structure or reinforcing structure.

A motor 26, a turbine 28, an electronics unit 30 and a power supply 32are arranged dorsally. The power supply 32 is designed as a rechargeablebattery and has an interface 34.

The motor 26 and the turbine 28 are designed in particular as a motorturbine unit or as a module. This has the advantage of permittingparticularly simple installation. The electronics unit 30 can likewisebe integrated in the motor turbine unit in order to take on either onlycontrol of the motor or overall control of the dust detection device 10.In the embodiment illustrated, the electronic unit is arranged betweenthe motor turbine unit and the rechargeable battery 32.

Air is guided within the dust detection device 10 along the arrowsshown.

The dust detection device 10 is designed in such a manner that itpartially surrounds a space R. The space R is completely filled by aperson, a user 12, while wearing the dust detection device 10. Atransversal axis 40 and a ventral axis 42 divide the space theoreticallyinto four quadrants, a ventral left quadrant I, a dorsal left quadrantII, a dorsal right quadrant III and a ventral right quadrant IV. Inorder to achieve ergonomic wearing of the dust detection device 10, acenter of gravity S during the wearing of the dust detection device 10should be located on the transverse axis 40 and extend in each case inequal amounts into the ventral left quadrant I and the ventral rightquadrant IV. This is achieved by the arrangement of the components inthe dust detection device 10.

FIG. 4 shows a further embodiment of the dust detection device 10. Inthis embodiment, the rechargeable battery 32 is arranged at the rightend 21 of the dust detection device 10 and the hose connection element20 is arranged at the left end 19 of the dust detection device 10.However, it is also conceivable that the rechargeable battery 32 isarranged at the left end 19 of the dust detection device 10 and the hoseconnection element 20 is arranged at the right end 21 of the dustdetection device 10. This has the advantage that the user 12 of the dustdetection device 10 can very simply change the rechargeable battery 32.The weight of a connected suction hose 14 and the weight of therechargeable battery 32 are introduced at the opposite ends 19, 21 ofthe dust detection device 10. The weight of the rechargeable battery 32is therefore very easily compensated for. The motor 26 and the turbine28 are arranged in the dorsal region, and this, in addition to thealready described arrangement of hose connection and rechargeablebattery 32, permits a particularly advantageous distribution of weight.Air outlet openings 50 are arranged to the sides of the motor 26 and theturbine 28. An operator interface 52 is arranged on the dust detectiondevice 10 next to the rechargeable battery 32. The dust detection device10 can be switched on or off via the operator interface 52. The dustdetection device 10 can be connected to the portable power tool via theoperator interface 52. Information, such as, for example, a fillinglevel of the dust-collecting device 24, a suction capacity, a chargingstatus of the rechargeable battery 32, the portable power tool 18connected to the dust detection device 10, can be displayed to the user.

It can be of advantage if a further filter 54 is arranged between thedust-collecting device 24 and the motor 26, in order to collect finedust. The fine dust filter 54 is designed in particular as a permanentfilter and can be removed via a flap and cleaned, or exchanged. Suchfilter systems are already known from the prior art. For this reason,they will not be discussed further here.

In this arrangement, the electronics unit 30 is arranged behind themotor 26. The advantage of this arrangement is particularly advantageouscooling which is higher an air density in the delivery region of themotor fan. The electronics unit 30 can likewise be integrated in themotor turbine unit in order to take on either only control of the motoror the overall control of the dust detection device 10.

The advantage of the embodiment according to FIG. 4 is that the weightof the dust detection device 10 is distributed ventrally and thereforepermits better wearing comfort since the weight of the dust detectiondevice 10 does not pull into a user's back.

FIG. 5 shows a further embodiment of the dust detection device 10. Inthis embodiment, the rechargeable battery 32 is arranged at the rightend 21 of the dust detection device 10. However, it is also conceivablefor the rechargeable battery 30 to be arranged at the left end 19 of thedust detection device 10. In this embodiment, two turbines 28 a and 28 bare arranged directly next to the rechargeable battery 32. In thisembodiment, the turbines 28 a, 28 b are arranged one above the other.The arrangement of the turbines 28 a, 28 b runs here in a radialorientation of the dust detection device 10. A large dust-collectingdevice 24 is arranged in the dorsal region. The fine filter 54 isarranged between the dust-collecting device 24 and the turbines 28 a, 28b. The hose connection element 20 is arranged on the dust detectiondevice 10 in the dorsal right region II.

FIG. 6 schematically shows a dust detection device 10. So that the dustdetection device 10 can be placed around the hips of a user and removedagain, pivot points 60 are arranged on the dust detection device 10. Thesections of the dust detection device 10 between the pivot points can bemoved in such a manner that the area of the space R that is at leastpartially enclosed by the dust detection device 10 becomes larger orsmaller.

The dust detection device 10 is composed of a flexibly elastic orpartially elastic material, for example of a thermoplastic elastomer,such as silicone. The Shore hardness of the material is between 90 and35, preferably between 70 and 60, here.

The dust detection device 10 should have at least 4 and at maximum 16pivoting points 60. However, the dust detection device 10 preferably has6 pivot points 60. By means of the pivot points, the dust detectiondevice 10 is designed in the manner of a clamp which is placed aroundthe hips of the user and can be opened counter to a restoring force. Inthe closed state, the restoring force presses the dust detection device10 against the hips of the user 12. A loss of the position on the bodycan thus be prevented.

The width KB of the area A that is enclosed by the dust detection device10 should cover at least a body width of a user of 34 to 46 cm when theuser is standing. The height H of the area A which is enclosed by thedust detection device 10 should cover at least a body depth of a user of24.5 to 38 cm when the user is standing.

The distance a between two pivot points 60 in the dorsal region of thedust detection device 10 should be between 25 cm and 35 cm. The distancea between two pivot points 60 in the dorsal region of the dust detectiondevice 10 should preferably be smaller than 30 cm.

FIG. 7 shows a dust detection device 10 with an operator interface 52.The operator interface 52 comprises a display unit 55 and an operatingelement 56. The operating element 56 serves for switching the dustdetection device 10 on or off, for pairing the dust detection device 10with the portable power tool 18, for adjusting the suction line and thelike.

A communication unit 58 which is preferably designed to be wireless isarranged on the dust detection device 10. The communication unit 58serves for the dust detection device 10 to communicate with the portablepower tool 18, in particular for automatic starting of the dustdetection device 10 when the portable power tool 18 is put intooperation.

FIG. 8 shows a dust detection device 10 which can be closed via a beltclosure 70 or a clip with a strap.

1. A dust detection device, comprising: a dust extraction deviceconfigured to clean air, wherein the dust extraction device isconfigured for placement around the hips of a user of the dust detectiondevice.
 2. The dust detection device as claimed in claim 1, furthercomprising: at least one hose connection element is arranged at a leftend of the dust detection device or at a right end of the dust detectiondevice.
 3. The dust detection device as claimed in claim 2, furthercomprising: at least one suction hose fastenable to the at least onehose connection element.
 4. The dust detection device as claimed inclaim 3, wherein the at least one suction hose is couplable to aportable power tool.
 5. The dust detection device as claimed in claim 2,further comprising: at least one dust-collecting device arranged on theat least one hose connection element.
 6. The dust detection device asclaimed in claim 1, further comprising: a hose connection element; avalve element; a dust-collecting device; a motor; a turbine; anelectronics unit; a power supply; and/or a battery interface.
 7. Thedust detection device as claimed in claim 1, wherein: the dust detectiondevice is configured to at least partially surround a space, and thespace is completely filled by a user while wearing the dust detectiondevice.
 8. The dust detection device as claimed in claim 7, wherein atransversal axis and a ventral axis divide the space into a ventral leftquadrant, a dorsal left quadrant, a dorsal right quadrant, and a ventralright quadrant.
 9. The dust detection device as claimed in claim 8,wherein a center of gravity is located in front of the traversal axisduring wearing of the dust detection device.
 10. The dust detectiondevice as claimed in claim 1, further comprising: at least onecommunication unit configured to communicate with a portable power tool.